* [PATCH 1/9] staging: bcm2835-audio: unify FOURCC command definitions
2018-10-16 15:02 [PATCH 0/9] staging: bcm2835-audio: Cleanups and upgrades Nicolas Saenz Julienne
@ 2018-10-16 15:02 ` Nicolas Saenz Julienne
2018-10-16 15:02 ` [PATCH 2/9] staging: bcm2835-audio: don't initialize memory twice Nicolas Saenz Julienne
` (8 subsequent siblings)
9 siblings, 0 replies; 16+ messages in thread
From: Nicolas Saenz Julienne @ 2018-10-16 15:02 UTC (permalink / raw)
To: gregkh
Cc: eric, stefan.wahren, linux-rpi-kernel, linux-kernel, devicetree,
robh+dt, tiwai, nsaenzjulienne
The device communicates with the audio core using FOURCC codes. The
driver was generating them using different macros/expressions. We now
use the same macro to create them and centralize all the definitions.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
.../vc04_services/bcm2835-audio/bcm2835-vchiq.c | 13 ++++---------
.../bcm2835-audio/vc_vchi_audioserv_defs.h | 4 +++-
2 files changed, 7 insertions(+), 10 deletions(-)
diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
index 781754f36da7..aca7008e1921 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
@@ -89,11 +89,6 @@ static int bcm2835_audio_send_simple(struct bcm2835_audio_instance *instance,
return bcm2835_audio_send_msg(instance, &m, wait);
}
-static const u32 BCM2835_AUDIO_WRITE_COOKIE1 = ('B' << 24 | 'C' << 16 |
- 'M' << 8 | 'A');
-static const u32 BCM2835_AUDIO_WRITE_COOKIE2 = ('D' << 24 | 'A' << 16 |
- 'T' << 8 | 'A');
-
static void audio_vchi_callback(void *param,
const VCHI_CALLBACK_REASON_T reason,
void *msg_handle)
@@ -112,8 +107,8 @@ static void audio_vchi_callback(void *param,
instance->result = m.u.result.success;
complete(&instance->msg_avail_comp);
} else if (m.type == VC_AUDIO_MSG_TYPE_COMPLETE) {
- if (m.u.complete.cookie1 != BCM2835_AUDIO_WRITE_COOKIE1 ||
- m.u.complete.cookie2 != BCM2835_AUDIO_WRITE_COOKIE2)
+ if (m.u.complete.cookie1 != VC_AUDIO_WRITE_COOKIE1 ||
+ m.u.complete.cookie2 != VC_AUDIO_WRITE_COOKIE2)
dev_err(instance->dev, "invalid cookie\n");
else
bcm2835_playback_fifo(instance->alsa_stream,
@@ -329,8 +324,8 @@ int bcm2835_audio_write(struct bcm2835_alsa_stream *alsa_stream,
.type = VC_AUDIO_MSG_TYPE_WRITE,
.u.write.count = size,
.u.write.max_packet = instance->max_packet,
- .u.write.cookie1 = BCM2835_AUDIO_WRITE_COOKIE1,
- .u.write.cookie2 = BCM2835_AUDIO_WRITE_COOKIE2,
+ .u.write.cookie1 = VC_AUDIO_WRITE_COOKIE1,
+ .u.write.cookie2 = VC_AUDIO_WRITE_COOKIE2,
};
unsigned int count;
int err, status;
diff --git a/drivers/staging/vc04_services/bcm2835-audio/vc_vchi_audioserv_defs.h b/drivers/staging/vc04_services/bcm2835-audio/vc_vchi_audioserv_defs.h
index 1a7f0884ac9c..dc62875cfdca 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/vc_vchi_audioserv_defs.h
+++ b/drivers/staging/vc04_services/bcm2835-audio/vc_vchi_audioserv_defs.h
@@ -7,8 +7,10 @@
#define VC_AUDIOSERV_MIN_VER 1
#define VC_AUDIOSERV_VER 2
-/* FourCC code used for VCHI connection */
+/* FourCC codes used for VCHI communication */
#define VC_AUDIO_SERVER_NAME MAKE_FOURCC("AUDS")
+#define VC_AUDIO_WRITE_COOKIE1 MAKE_FOURCC("BCMA")
+#define VC_AUDIO_WRITE_COOKIE2 MAKE_FOURCC("DATA")
/*
* List of screens that are currently supported
--
2.19.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* [PATCH 2/9] staging: bcm2835-audio: don't initialize memory twice
2018-10-16 15:02 [PATCH 0/9] staging: bcm2835-audio: Cleanups and upgrades Nicolas Saenz Julienne
2018-10-16 15:02 ` [PATCH 1/9] staging: bcm2835-audio: unify FOURCC command definitions Nicolas Saenz Julienne
@ 2018-10-16 15:02 ` Nicolas Saenz Julienne
2018-10-16 15:02 ` [PATCH 3/9] staging: bcm2835-audio: reorder variable declarations & remove trivial comments Nicolas Saenz Julienne
` (7 subsequent siblings)
9 siblings, 0 replies; 16+ messages in thread
From: Nicolas Saenz Julienne @ 2018-10-16 15:02 UTC (permalink / raw)
To: gregkh
Cc: eric, stefan.wahren, linux-rpi-kernel, linux-kernel, devicetree,
robh+dt, tiwai, nsaenzjulienne
The memory is being allocated with devres_alloc(), wich ultimately uses
__GFP_ZERO to call kmalloc. We don't need to zero the memory area again
in bcm2835-audio.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
drivers/staging/vc04_services/bcm2835-audio/bcm2835.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
index 87d56ab1ffa0..0efae7068fef 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
@@ -39,8 +39,6 @@ static int bcm2835_devm_add_vchi_ctx(struct device *dev)
if (!vchi_ctx)
return -ENOMEM;
- memset(vchi_ctx, 0, sizeof(*vchi_ctx));
-
ret = bcm2835_new_vchi_ctx(dev, vchi_ctx);
if (ret) {
devres_free(vchi_ctx);
--
2.19.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* [PATCH 3/9] staging: bcm2835-audio: reorder variable declarations & remove trivial comments
2018-10-16 15:02 [PATCH 0/9] staging: bcm2835-audio: Cleanups and upgrades Nicolas Saenz Julienne
2018-10-16 15:02 ` [PATCH 1/9] staging: bcm2835-audio: unify FOURCC command definitions Nicolas Saenz Julienne
2018-10-16 15:02 ` [PATCH 2/9] staging: bcm2835-audio: don't initialize memory twice Nicolas Saenz Julienne
@ 2018-10-16 15:02 ` Nicolas Saenz Julienne
2018-10-16 15:02 ` [PATCH 4/9] staging: bcm2835-audio: use anonymous union in struct vc_audio_msg Nicolas Saenz Julienne
` (6 subsequent siblings)
9 siblings, 0 replies; 16+ messages in thread
From: Nicolas Saenz Julienne @ 2018-10-16 15:02 UTC (permalink / raw)
To: gregkh
Cc: eric, stefan.wahren, linux-rpi-kernel, linux-kernel, devicetree,
robh+dt, tiwai, nsaenzjulienne
When it comes to declaring variables it's preferred, when possible, to
use an inverted tree organization scheme.
Also, removes some comments that were useless.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
.../vc04_services/bcm2835-audio/bcm2835-pcm.c | 10 ++--------
.../vc04_services/bcm2835-audio/bcm2835-vchiq.c | 4 ++--
.../staging/vc04_services/bcm2835-audio/bcm2835.c | 14 +++++++-------
3 files changed, 11 insertions(+), 17 deletions(-)
diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
index e66da11af5cf..98b6977bdce7 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
@@ -164,14 +164,11 @@ static int snd_bcm2835_playback_spdif_open(struct snd_pcm_substream *substream)
return snd_bcm2835_playback_open_generic(substream, 1);
}
-/* close callback */
static int snd_bcm2835_playback_close(struct snd_pcm_substream *substream)
{
- /* the hardware-specific codes will be here */
-
- struct bcm2835_chip *chip;
- struct snd_pcm_runtime *runtime;
struct bcm2835_alsa_stream *alsa_stream;
+ struct snd_pcm_runtime *runtime;
+ struct bcm2835_chip *chip;
chip = snd_pcm_substream_chip(substream);
mutex_lock(&chip->audio_mutex);
@@ -195,20 +192,17 @@ static int snd_bcm2835_playback_close(struct snd_pcm_substream *substream)
return 0;
}
-/* hw_params callback */
static int snd_bcm2835_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
}
-/* hw_free callback */
static int snd_bcm2835_pcm_hw_free(struct snd_pcm_substream *substream)
{
return snd_pcm_lib_free_pages(substream);
}
-/* prepare callback */
static int snd_bcm2835_pcm_prepare(struct snd_pcm_substream *substream)
{
struct bcm2835_chip *chip = snd_pcm_substream_chip(substream);
diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
index aca7008e1921..932ef12ac5d2 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
@@ -94,9 +94,9 @@ static void audio_vchi_callback(void *param,
void *msg_handle)
{
struct bcm2835_audio_instance *instance = param;
- int status;
- int msg_len;
struct vc_audio_msg m;
+ int msg_len;
+ int status;
if (reason != VCHI_CALLBACK_MSG_AVAILABLE)
return;
diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
index 0efae7068fef..6ee8334dfc81 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
@@ -161,8 +161,8 @@ static int snd_add_child_device(struct device *dev,
struct bcm2835_audio_driver *audio_driver,
u32 numchans)
{
- struct snd_card *card;
struct bcm2835_chip *chip;
+ struct snd_card *card;
int err;
err = snd_card_new(dev, -1, NULL, THIS_MODULE, sizeof(*chip), &card);
@@ -225,12 +225,12 @@ static int snd_add_child_device(struct device *dev,
static int snd_add_child_devices(struct device *device, u32 numchans)
{
- int i;
- int count_devices = 0;
- int minchannels = 0;
- int extrachannels = 0;
int extrachannels_per_driver = 0;
int extrachannels_remainder = 0;
+ int count_devices = 0;
+ int extrachannels = 0;
+ int minchannels = 0;
+ int i;
for (i = 0; i < ARRAY_SIZE(children_devices); i++)
if (*children_devices[i].is_enabled)
@@ -258,9 +258,9 @@ static int snd_add_child_devices(struct device *device, u32 numchans)
extrachannels_remainder);
for (i = 0; i < ARRAY_SIZE(children_devices); i++) {
- int err;
- int numchannels_this_device;
struct bcm2835_audio_driver *audio_driver;
+ int numchannels_this_device;
+ int err;
if (!*children_devices[i].is_enabled)
continue;
--
2.19.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* [PATCH 4/9] staging: bcm2835-audio: use anonymous union in struct vc_audio_msg
2018-10-16 15:02 [PATCH 0/9] staging: bcm2835-audio: Cleanups and upgrades Nicolas Saenz Julienne
` (2 preceding siblings ...)
2018-10-16 15:02 ` [PATCH 3/9] staging: bcm2835-audio: reorder variable declarations & remove trivial comments Nicolas Saenz Julienne
@ 2018-10-16 15:02 ` Nicolas Saenz Julienne
2018-10-16 15:02 ` [PATCH 5/9] staging: bcm2835-audio: more generic probe function name Nicolas Saenz Julienne
` (5 subsequent siblings)
9 siblings, 0 replies; 16+ messages in thread
From: Nicolas Saenz Julienne @ 2018-10-16 15:02 UTC (permalink / raw)
To: gregkh
Cc: eric, stefan.wahren, linux-rpi-kernel, linux-kernel, devicetree,
robh+dt, tiwai, nsaenzjulienne
In this case explicitly naming the union doesn't help overall code
comprehension and clutters it.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
.../bcm2835-audio/bcm2835-vchiq.c | 30 +++++++++----------
.../bcm2835-audio/vc_vchi_audioserv_defs.h | 2 +-
2 files changed, 16 insertions(+), 16 deletions(-)
diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
index 932ef12ac5d2..0db412fd7c55 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
@@ -104,15 +104,15 @@ static void audio_vchi_callback(void *param,
status = vchi_msg_dequeue(instance->vchi_handle,
&m, sizeof(m), &msg_len, VCHI_FLAGS_NONE);
if (m.type == VC_AUDIO_MSG_TYPE_RESULT) {
- instance->result = m.u.result.success;
+ instance->result = m.result.success;
complete(&instance->msg_avail_comp);
} else if (m.type == VC_AUDIO_MSG_TYPE_COMPLETE) {
- if (m.u.complete.cookie1 != VC_AUDIO_WRITE_COOKIE1 ||
- m.u.complete.cookie2 != VC_AUDIO_WRITE_COOKIE2)
+ if (m.complete.cookie1 != VC_AUDIO_WRITE_COOKIE1 ||
+ m.complete.cookie2 != VC_AUDIO_WRITE_COOKIE2)
dev_err(instance->dev, "invalid cookie\n");
else
bcm2835_playback_fifo(instance->alsa_stream,
- m.u.complete.count);
+ m.complete.count);
} else {
dev_err(instance->dev, "unexpected callback type=%d\n", m.type);
}
@@ -249,11 +249,11 @@ int bcm2835_audio_set_ctls(struct bcm2835_alsa_stream *alsa_stream)
struct vc_audio_msg m = {};
m.type = VC_AUDIO_MSG_TYPE_CONTROL;
- m.u.control.dest = chip->dest;
+ m.control.dest = chip->dest;
if (!chip->mute)
- m.u.control.volume = CHIP_MIN_VOLUME;
+ m.control.volume = CHIP_MIN_VOLUME;
else
- m.u.control.volume = alsa2chip(chip->volume);
+ m.control.volume = alsa2chip(chip->volume);
return bcm2835_audio_send_msg(alsa_stream->instance, &m, true);
}
@@ -264,9 +264,9 @@ int bcm2835_audio_set_params(struct bcm2835_alsa_stream *alsa_stream,
{
struct vc_audio_msg m = {
.type = VC_AUDIO_MSG_TYPE_CONFIG,
- .u.config.channels = channels,
- .u.config.samplerate = samplerate,
- .u.config.bps = bps,
+ .config.channels = channels,
+ .config.samplerate = samplerate,
+ .config.bps = bps,
};
int err;
@@ -294,7 +294,7 @@ int bcm2835_audio_drain(struct bcm2835_alsa_stream *alsa_stream)
{
struct vc_audio_msg m = {
.type = VC_AUDIO_MSG_TYPE_STOP,
- .u.stop.draining = 1,
+ .stop.draining = 1,
};
return bcm2835_audio_send_msg(alsa_stream->instance, &m, false);
@@ -322,10 +322,10 @@ int bcm2835_audio_write(struct bcm2835_alsa_stream *alsa_stream,
struct bcm2835_audio_instance *instance = alsa_stream->instance;
struct vc_audio_msg m = {
.type = VC_AUDIO_MSG_TYPE_WRITE,
- .u.write.count = size,
- .u.write.max_packet = instance->max_packet,
- .u.write.cookie1 = VC_AUDIO_WRITE_COOKIE1,
- .u.write.cookie2 = VC_AUDIO_WRITE_COOKIE2,
+ .write.count = size,
+ .write.max_packet = instance->max_packet,
+ .write.cookie1 = VC_AUDIO_WRITE_COOKIE1,
+ .write.cookie2 = VC_AUDIO_WRITE_COOKIE2,
};
unsigned int count;
int err, status;
diff --git a/drivers/staging/vc04_services/bcm2835-audio/vc_vchi_audioserv_defs.h b/drivers/staging/vc04_services/bcm2835-audio/vc_vchi_audioserv_defs.h
index dc62875cfdca..d6401e914ac9 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/vc_vchi_audioserv_defs.h
+++ b/drivers/staging/vc04_services/bcm2835-audio/vc_vchi_audioserv_defs.h
@@ -93,7 +93,7 @@ struct vc_audio_msg {
struct vc_audio_write write;
struct vc_audio_result result;
struct vc_audio_complete complete;
- } u;
+ };
};
#endif /* _VC_AUDIO_DEFS_H_ */
--
2.19.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* [PATCH 5/9] staging: bcm2835-audio: more generic probe function name
2018-10-16 15:02 [PATCH 0/9] staging: bcm2835-audio: Cleanups and upgrades Nicolas Saenz Julienne
` (3 preceding siblings ...)
2018-10-16 15:02 ` [PATCH 4/9] staging: bcm2835-audio: use anonymous union in struct vc_audio_msg Nicolas Saenz Julienne
@ 2018-10-16 15:02 ` Nicolas Saenz Julienne
2018-10-16 15:47 ` Takashi Iwai
2018-10-16 15:02 ` [PATCH 6/9] ASoC: dt-bindings: bcm2835-rpi: add onboard audio bindings Nicolas Saenz Julienne
` (4 subsequent siblings)
9 siblings, 1 reply; 16+ messages in thread
From: Nicolas Saenz Julienne @ 2018-10-16 15:02 UTC (permalink / raw)
To: gregkh
Cc: eric, stefan.wahren, linux-rpi-kernel, linux-kernel, devicetree,
robh+dt, tiwai, nsaenzjulienne
There will only be one probe function, there is no use for appendig
"_dt" the end of the name.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
drivers/staging/vc04_services/bcm2835-audio/bcm2835.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
index 6ee8334dfc81..039565311d10 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
@@ -291,7 +291,7 @@ static int snd_add_child_devices(struct device *device, u32 numchans)
return 0;
}
-static int snd_bcm2835_alsa_probe_dt(struct platform_device *pdev)
+static int snd_bcm2835_alsa_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
u32 numchans;
@@ -344,7 +344,7 @@ static const struct of_device_id snd_bcm2835_of_match_table[] = {
MODULE_DEVICE_TABLE(of, snd_bcm2835_of_match_table);
static struct platform_driver bcm2835_alsa0_driver = {
- .probe = snd_bcm2835_alsa_probe_dt,
+ .probe = snd_bcm2835_alsa_probe,
#ifdef CONFIG_PM
.suspend = snd_bcm2835_alsa_suspend,
.resume = snd_bcm2835_alsa_resume,
--
2.19.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* Re: [PATCH 5/9] staging: bcm2835-audio: more generic probe function name
2018-10-16 15:02 ` [PATCH 5/9] staging: bcm2835-audio: more generic probe function name Nicolas Saenz Julienne
@ 2018-10-16 15:47 ` Takashi Iwai
0 siblings, 0 replies; 16+ messages in thread
From: Takashi Iwai @ 2018-10-16 15:47 UTC (permalink / raw)
To: Nicolas Saenz Julienne
Cc: gregkh, eric, stefan.wahren, linux-rpi-kernel, linux-kernel,
devicetree, robh+dt, tiwai
On Tue, 16 Oct 2018 17:02:24 +0200,
Nicolas Saenz Julienne wrote:
>
> There will only be one probe function, there is no use for appendig
> "_dt" the end of the name.
>
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> ---
> drivers/staging/vc04_services/bcm2835-audio/bcm2835.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
> index 6ee8334dfc81..039565311d10 100644
> --- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
> +++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
> @@ -291,7 +291,7 @@ static int snd_add_child_devices(struct device *device, u32 numchans)
> return 0;
> }
>
> -static int snd_bcm2835_alsa_probe_dt(struct platform_device *pdev)
> +static int snd_bcm2835_alsa_probe(struct platform_device *pdev)
> {
> struct device *dev = &pdev->dev;
> u32 numchans;
> @@ -344,7 +344,7 @@ static const struct of_device_id snd_bcm2835_of_match_table[] = {
> MODULE_DEVICE_TABLE(of, snd_bcm2835_of_match_table);
>
> static struct platform_driver bcm2835_alsa0_driver = {
Actually now I wonder why this "0" here...
It has nothing to do with the patch, but it's a good opportunity to
clean it up, too.
thanks,
Takashi
^ permalink raw reply [flat|nested] 16+ messages in thread
* [PATCH 6/9] ASoC: dt-bindings: bcm2835-rpi: add onboard audio bindings
2018-10-16 15:02 [PATCH 0/9] staging: bcm2835-audio: Cleanups and upgrades Nicolas Saenz Julienne
` (4 preceding siblings ...)
2018-10-16 15:02 ` [PATCH 5/9] staging: bcm2835-audio: more generic probe function name Nicolas Saenz Julienne
@ 2018-10-16 15:02 ` Nicolas Saenz Julienne
2018-10-16 15:56 ` Stefan Wahren
2018-10-16 15:02 ` [PATCH 7/9] ARM: dts: bcm2835-rpi: add onboard audio device Nicolas Saenz Julienne
` (3 subsequent siblings)
9 siblings, 1 reply; 16+ messages in thread
From: Nicolas Saenz Julienne @ 2018-10-16 15:02 UTC (permalink / raw)
To: gregkh
Cc: eric, stefan.wahren, linux-rpi-kernel, linux-kernel, devicetree,
robh+dt, tiwai, nsaenzjulienne
Adds a device tree binding file for Raspberry pi's Headphones and HDMI
audio output devices.
Based on raspberry's downstream kernel implementation:
https://github.com/raspberrypi/linux/blob/rpi-4.14.y/arch/arm/boot/dts/bcm2708-rpi.dtsi
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
.../bindings/sound/brcm,bcm2835-audio.txt | 15 +++++++++++++++
1 file changed, 15 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/brcm,bcm2835-audio.txt
diff --git a/Documentation/devicetree/bindings/sound/brcm,bcm2835-audio.txt b/Documentation/devicetree/bindings/sound/brcm,bcm2835-audio.txt
new file mode 100644
index 000000000000..ee6fa085aaa9
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/brcm,bcm2835-audio.txt
@@ -0,0 +1,15 @@
+Broadcom BCM283x audio device
+
+Required properties:
+
+- compatible: Should be "brcm,bcm2835-audio"
+- brcm,pwm-channels: number of PWM channels, they are behind RPi's Video Core
+ IV, not actual Linux PWM devices.
+
+Example:
+
+audio: audio {
+ compatible = "brcm,bcm2835-audio";
+ brcm,pwm-channels = <8>;
+};
+
--
2.19.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* Re: [PATCH 6/9] ASoC: dt-bindings: bcm2835-rpi: add onboard audio bindings
2018-10-16 15:02 ` [PATCH 6/9] ASoC: dt-bindings: bcm2835-rpi: add onboard audio bindings Nicolas Saenz Julienne
@ 2018-10-16 15:56 ` Stefan Wahren
2018-10-16 16:48 ` Nicolas Saenz Julienne
0 siblings, 1 reply; 16+ messages in thread
From: Stefan Wahren @ 2018-10-16 15:56 UTC (permalink / raw)
To: Nicolas Saenz Julienne, gregkh
Cc: eric, linux-rpi-kernel, linux-kernel, devicetree, robh+dt, tiwai
Hi Nicolas,
Am 16.10.2018 um 17:02 schrieb Nicolas Saenz Julienne:
> Adds a device tree binding file for Raspberry pi's Headphones and HDMI
> audio output devices.
>
> Based on raspberry's downstream kernel implementation:
> https://github.com/raspberrypi/linux/blob/rpi-4.14.y/arch/arm/boot/dts/bcm2708-rpi.dtsi
>
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> ---
> .../bindings/sound/brcm,bcm2835-audio.txt | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/sound/brcm,bcm2835-audio.txt
>
> diff --git a/Documentation/devicetree/bindings/sound/brcm,bcm2835-audio.txt b/Documentation/devicetree/bindings/sound/brcm,bcm2835-audio.txt
> new file mode 100644
> index 000000000000..ee6fa085aaa9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/brcm,bcm2835-audio.txt
> @@ -0,0 +1,15 @@
> +Broadcom BCM283x audio device
> +
> +Required properties:
> +
> +- compatible: Should be "brcm,bcm2835-audio"
> +- brcm,pwm-channels: number of PWM channels, they are behind RPi's Video Core
> + IV, not actual Linux PWM devices.
> +
> +Example:
> +
> +audio: audio {
> + compatible = "brcm,bcm2835-audio";
> + brcm,pwm-channels = <8>;
> +};
> +
i apologize but it seems to me that the TODO mentioned in the cover
letter isn't update to date anymore.
Phil Elwell posted an important bugfix for vchiq before [1], but only
the driver part has been applied yet. After applying the DT changes i'm
not sure if it still works.
AFAIK the audio driver uses VCHIQ as a software interface and the
binding doesn't describe the real hardware.
Since the camera driver will be registered as a platform device [2], i
prefer this way for the audio driver, too.
I'm actually working on this here [3] (currently only compile tested).
Stefan
[1] - https://patchwork.ozlabs.org/cover/970434/
[2] - https://lore.kernel.org/patchwork/patch/904411/
[3] - https://github.com/anholt/linux/commits/bcm2835-audio
^ permalink raw reply [flat|nested] 16+ messages in thread* Re: [PATCH 6/9] ASoC: dt-bindings: bcm2835-rpi: add onboard audio bindings
2018-10-16 15:56 ` Stefan Wahren
@ 2018-10-16 16:48 ` Nicolas Saenz Julienne
2018-10-16 19:26 ` Stefan Wahren
0 siblings, 1 reply; 16+ messages in thread
From: Nicolas Saenz Julienne @ 2018-10-16 16:48 UTC (permalink / raw)
To: Stefan Wahren, gregkh
Cc: eric, linux-rpi-kernel, linux-kernel, devicetree, robh+dt, tiwai
[-- Attachment #1: Type: text/plain, Size: 2570 bytes --]
Hi Stefan, thanks for the review,
On Tue, 2018-10-16 at 17:56 +0200, Stefan Wahren wrote:
> Hi Nicolas,
>
> Am 16.10.2018 um 17:02 schrieb Nicolas Saenz Julienne:
> > Adds a device tree binding file for Raspberry pi's Headphones and
> > HDMI
> > audio output devices.
> >
> > Based on raspberry's downstream kernel implementation:
> >
https://github.com/raspberrypi/linux/blob/rpi-4.14.y/arch/arm/boot/dts/bcm2708-rpi.dtsi
> >
> > Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> > ---
> > .../bindings/sound/brcm,bcm2835-audio.txt | 15
> > +++++++++++++++
> > 1 file changed, 15 insertions(+)
> > create mode 100644
> > Documentation/devicetree/bindings/sound/brcm,bcm2835-audio.txt
> >
> > diff --git a/Documentation/devicetree/bindings/sound/brcm,bcm2835-
> > audio.txt b/Documentation/devicetree/bindings/sound/brcm,bcm2835-
> > audio.txt
> > new file mode 100644
> > index 000000000000..ee6fa085aaa9
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/sound/brcm,bcm2835-
> > audio.txt
> > @@ -0,0 +1,15 @@
> > +Broadcom BCM283x audio device
> > +
> > +Required properties:
> > +
> > +- compatible: Should be "brcm,bcm2835-audio"
> > +- brcm,pwm-channels: number of PWM channels, they are behind RPi's
> > Video Core
> > + IV, not actual Linux PWM devices.
> > +
> > +Example:
> > +
> > +audio: audio {
> > + compatible = "brcm,bcm2835-audio";
> > + brcm,pwm-channels = <8>;
> > +};
> > +
>
> i apologize but it seems to me that the TODO mentioned in the cover
> letter isn't update to date anymore.
>
> Phil Elwell posted an important bugfix for vchiq before [1], but only
> the driver part has been applied yet. After applying the DT changes
> i'm
> not sure if it still works.
>
> AFAIK the audio driver uses VCHIQ as a software interface and the
> binding doesn't describe the real hardware.
>
> Since the camera driver will be registered as a platform device [2],
> i
> prefer this way for the audio driver, too.
>
> I'm actually working on this here [3] (currently only compile
> tested).
>
Fair enough. I wasn't feeling too good about the bindings myself. I
only went with them because I saw something similar was happening
between "raspberrypi,bcm2835-power" and "raspberrypi,bcm2835-firmware".
I'll be glad to review & test your patches whenever they are ready.
This makes commits 6 to 9 useless. Do you want me to send a v2? I can
throw in an extra change Takashi suggested and update the TODO file.
Regards,
Nicolas
[-- Attachment #2: This is a digitally signed message part --]
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^ permalink raw reply [flat|nested] 16+ messages in thread* Re: [PATCH 6/9] ASoC: dt-bindings: bcm2835-rpi: add onboard audio bindings
2018-10-16 16:48 ` Nicolas Saenz Julienne
@ 2018-10-16 19:26 ` Stefan Wahren
0 siblings, 0 replies; 16+ messages in thread
From: Stefan Wahren @ 2018-10-16 19:26 UTC (permalink / raw)
To: Nicolas Saenz Julienne, gregkh
Cc: eric, linux-rpi-kernel, linux-kernel, devicetree, robh+dt, tiwai
Hi Nicolas,
> Nicolas Saenz Julienne <nsaenzjulienne@suse.de> hat am 16. Oktober 2018 um 18:48 geschrieben:
>
>
> Hi Stefan, thanks for the review,
>
> On Tue, 2018-10-16 at 17:56 +0200, Stefan Wahren wrote:
> > Hi Nicolas,
> >
> > Am 16.10.2018 um 17:02 schrieb Nicolas Saenz Julienne:
> > > Adds a device tree binding file for Raspberry pi's Headphones and
> > > HDMI
> > > audio output devices.
> > >
> > > Based on raspberry's downstream kernel implementation:
> > >
>
> https://github.com/raspberrypi/linux/blob/rpi-4.14.y/arch/arm/boot/dts/bcm2708-rpi.dtsi
> > >
> > > Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> > > ---
> > > .../bindings/sound/brcm,bcm2835-audio.txt | 15
> > > +++++++++++++++
> > > 1 file changed, 15 insertions(+)
> > > create mode 100644
> > > Documentation/devicetree/bindings/sound/brcm,bcm2835-audio.txt
> > >
> > > diff --git a/Documentation/devicetree/bindings/sound/brcm,bcm2835-
> > > audio.txt b/Documentation/devicetree/bindings/sound/brcm,bcm2835-
> > > audio.txt
> > > new file mode 100644
> > > index 000000000000..ee6fa085aaa9
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/sound/brcm,bcm2835-
> > > audio.txt
> > > @@ -0,0 +1,15 @@
> > > +Broadcom BCM283x audio device
> > > +
> > > +Required properties:
> > > +
> > > +- compatible: Should be "brcm,bcm2835-audio"
> > > +- brcm,pwm-channels: number of PWM channels, they are behind RPi's
> > > Video Core
> > > + IV, not actual Linux PWM devices.
> > > +
> > > +Example:
> > > +
> > > +audio: audio {
> > > + compatible = "brcm,bcm2835-audio";
> > > + brcm,pwm-channels = <8>;
> > > +};
> > > +
> >
> > i apologize but it seems to me that the TODO mentioned in the cover
> > letter isn't update to date anymore.
> >
> > Phil Elwell posted an important bugfix for vchiq before [1], but only
> > the driver part has been applied yet. After applying the DT changes
> > i'm
> > not sure if it still works.
> >
> > AFAIK the audio driver uses VCHIQ as a software interface and the
> > binding doesn't describe the real hardware.
> >
> > Since the camera driver will be registered as a platform device [2],
> > i
> > prefer this way for the audio driver, too.
> >
> > I'm actually working on this here [3] (currently only compile
> > tested).
> >
>
> Fair enough. I wasn't feeling too good about the bindings myself. I
> only went with them because I saw something similar was happening
> between "raspberrypi,bcm2835-power" and "raspberrypi,bcm2835-firmware".
> I'll be glad to review & test your patches whenever they are ready.
i will inform you.
>
> This makes commits 6 to 9 useless. Do you want me to send a v2? I can
> throw in an extra change Takashi suggested and update the TODO file.
You can add my
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
to patches 1 to 5. Please drop 6 to 9 from the series and add the other suggestions.
Btw please add devel@driverdev.osuosl.org to CC for V2
Thanks
Stefan
>
> Regards,
> Nicolas
^ permalink raw reply [flat|nested] 16+ messages in thread
* [PATCH 7/9] ARM: dts: bcm2835-rpi: add onboard audio device
2018-10-16 15:02 [PATCH 0/9] staging: bcm2835-audio: Cleanups and upgrades Nicolas Saenz Julienne
` (5 preceding siblings ...)
2018-10-16 15:02 ` [PATCH 6/9] ASoC: dt-bindings: bcm2835-rpi: add onboard audio bindings Nicolas Saenz Julienne
@ 2018-10-16 15:02 ` Nicolas Saenz Julienne
2018-10-16 16:18 ` Eric Anholt
2018-10-16 15:02 ` [PATCH 8/9] staging: vchiq_arm: add function to check if probe was successful Nicolas Saenz Julienne
` (2 subsequent siblings)
9 siblings, 1 reply; 16+ messages in thread
From: Nicolas Saenz Julienne @ 2018-10-16 15:02 UTC (permalink / raw)
To: gregkh
Cc: eric, stefan.wahren, linux-rpi-kernel, linux-kernel, devicetree,
robh+dt, tiwai, nsaenzjulienne
The audio device interfaces with VCHIQ to send audio through the rpi's
Headphones & HDMI.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
arch/arm/boot/dts/bcm2835-rpi.dtsi | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
index cb2d6d78a7fb..6cc580d17862 100644
--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
+++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
@@ -35,6 +35,11 @@
reg = <0x7e00b840 0xf>;
interrupts = <0 2>;
};
+
+ audio: audio {
+ compatible = "brcm,bcm2835-audio";
+ brcm,pwm-channels = <8>;
+ };
};
};
--
2.19.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* Re: [PATCH 7/9] ARM: dts: bcm2835-rpi: add onboard audio device
2018-10-16 15:02 ` [PATCH 7/9] ARM: dts: bcm2835-rpi: add onboard audio device Nicolas Saenz Julienne
@ 2018-10-16 16:18 ` Eric Anholt
0 siblings, 0 replies; 16+ messages in thread
From: Eric Anholt @ 2018-10-16 16:18 UTC (permalink / raw)
To: Nicolas Saenz Julienne, gregkh
Cc: stefan.wahren, linux-rpi-kernel, linux-kernel, devicetree,
robh+dt, tiwai, nsaenzjulienne
[-- Attachment #1: Type: text/plain, Size: 804 bytes --]
Nicolas Saenz Julienne <nsaenzjulienne@suse.de> writes:
> The audio device interfaces with VCHIQ to send audio through the rpi's
> Headphones & HDMI.
>
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> ---
> arch/arm/boot/dts/bcm2835-rpi.dtsi | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
> index cb2d6d78a7fb..6cc580d17862 100644
> --- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
> +++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
> @@ -35,6 +35,11 @@
> reg = <0x7e00b840 0xf>;
> interrupts = <0 2>;
> };
> +
> + audio: audio {
> + compatible = "brcm,bcm2835-audio";
> + brcm,pwm-channels = <8>;
> + };
> };
> };
Assuming the DT binding gets acked,
Acked-by: Eric Anholt <eric@anholt.net>
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 832 bytes --]
^ permalink raw reply [flat|nested] 16+ messages in thread
* [PATCH 8/9] staging: vchiq_arm: add function to check if probe was successful
2018-10-16 15:02 [PATCH 0/9] staging: bcm2835-audio: Cleanups and upgrades Nicolas Saenz Julienne
` (6 preceding siblings ...)
2018-10-16 15:02 ` [PATCH 7/9] ARM: dts: bcm2835-rpi: add onboard audio device Nicolas Saenz Julienne
@ 2018-10-16 15:02 ` Nicolas Saenz Julienne
2018-10-16 15:02 ` [PATCH 9/9] staging: bcm2835-audio: check for VCHIQ during probe Nicolas Saenz Julienne
2018-10-16 15:47 ` [PATCH 0/9] staging: bcm2835-audio: Cleanups and upgrades Takashi Iwai
9 siblings, 0 replies; 16+ messages in thread
From: Nicolas Saenz Julienne @ 2018-10-16 15:02 UTC (permalink / raw)
To: gregkh
Cc: eric, stefan.wahren, linux-rpi-kernel, linux-kernel, devicetree,
robh+dt, tiwai, nsaenzjulienne
Devices depending on VCHIQ need to double check it's initialization
process was successful. This patch adds a helper function to do so.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
.../staging/vc04_services/interface/vchi/vchi.h | 3 +++
.../interface/vchiq_arm/vchiq_2835_arm.c | 2 ++
.../interface/vchiq_arm/vchiq_arm.c | 16 ++++++++++++++++
.../interface/vchiq_arm/vchiq_arm.h | 1 +
.../vc04_services/interface/vchiq_arm/vchiq_if.h | 4 ++++
.../interface/vchiq_arm/vchiq_shim.c | 7 +++++++
6 files changed, 33 insertions(+)
diff --git a/drivers/staging/vc04_services/interface/vchi/vchi.h b/drivers/staging/vc04_services/interface/vchi/vchi.h
index 01381904775d..acf01352135f 100644
--- a/drivers/staging/vc04_services/interface/vchi/vchi.h
+++ b/drivers/staging/vc04_services/interface/vchi/vchi.h
@@ -113,6 +113,9 @@ extern uint32_t vchi_current_time(VCHI_INSTANCE_T instance_handle);
/******************************************************************************
Global service API
*****************************************************************************/
+// Routine to check if vchi is ready
+extern bool vchi_ready(struct device_node *firmware_node);
+
// Routine to create a named service
extern int32_t vchi_service_create(VCHI_INSTANCE_T instance_handle,
SERVICE_CREATION_T *setup,
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
index 83d740feab96..31dd8a303a20 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
@@ -194,6 +194,8 @@ int vchiq_platform_init(struct platform_device *pdev, VCHIQ_STATE_T *state)
}
g_dev = dev;
+ drvdata->ready = 1;
+
vchiq_log_info(vchiq_arm_log_level,
"vchiq_init - done (slots %pK, phys %pad)",
vchiq_slot_zero, &slot_phys);
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
index ea789376de0f..2690e751d1a5 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -3682,6 +3682,22 @@ static int vchiq_remove(struct platform_device *pdev)
return 0;
}
+bool vchiq_ready(struct device_node *firmware_node)
+{
+ struct platform_device *pdev = of_find_device_by_node(firmware_node);
+ struct vchiq_drvdata *drvdata;
+
+ if (!pdev)
+ return false;
+
+ drvdata = platform_get_drvdata(pdev);
+ if (!drvdata)
+ return false;
+
+ return drvdata->ready;
+}
+EXPORT_SYMBOL_GPL(vchiq_ready);
+
static struct platform_driver vchiq_driver = {
.driver = {
.name = "bcm2835_vchiq",
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h
index 2f3ebc99cbcf..8215904d219b 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h
@@ -126,6 +126,7 @@ typedef struct vchiq_arm_state_struct {
struct vchiq_drvdata {
const unsigned int cache_line_size;
struct rpi_firmware *fw;
+ unsigned int ready:1;
};
extern int vchiq_arm_log_level;
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_if.h b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_if.h
index e4109a83e628..54ba822f38ff 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_if.h
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_if.h
@@ -34,6 +34,8 @@
#ifndef VCHIQ_IF_H
#define VCHIQ_IF_H
+#include <linux/of.h>
+
#include "interface/vchi/vchi_mh.h"
#define VCHIQ_SERVICE_HANDLE_INVALID 0
@@ -179,4 +181,6 @@ extern VCHIQ_STATUS_T vchiq_dump_phys_mem(VCHIQ_SERVICE_HANDLE_T service,
extern VCHIQ_STATUS_T vchiq_get_peer_version(VCHIQ_SERVICE_HANDLE_T handle,
short *peer_version);
+extern bool vchiq_ready(struct device_node *firmware_node);
+
#endif /* VCHIQ_IF_H */
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c
index c3223fcdaf87..69fdface29fd 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c
@@ -32,6 +32,7 @@
*/
#include <linux/module.h>
#include <linux/types.h>
+#include <linux/of.h>
#include "interface/vchi/vchi.h"
#include "vchiq.h"
@@ -50,6 +51,12 @@ struct shim_service {
void *callback_param;
};
+bool vchi_ready(struct device_node *firmware_node)
+{
+ return vchiq_ready(firmware_node);
+}
+EXPORT_SYMBOL(vchi_ready);
+
/***********************************************************
* Name: vchi_msg_peek
*
--
2.19.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* [PATCH 9/9] staging: bcm2835-audio: check for VCHIQ during probe
2018-10-16 15:02 [PATCH 0/9] staging: bcm2835-audio: Cleanups and upgrades Nicolas Saenz Julienne
` (7 preceding siblings ...)
2018-10-16 15:02 ` [PATCH 8/9] staging: vchiq_arm: add function to check if probe was successful Nicolas Saenz Julienne
@ 2018-10-16 15:02 ` Nicolas Saenz Julienne
2018-10-16 15:47 ` [PATCH 0/9] staging: bcm2835-audio: Cleanups and upgrades Takashi Iwai
9 siblings, 0 replies; 16+ messages in thread
From: Nicolas Saenz Julienne @ 2018-10-16 15:02 UTC (permalink / raw)
To: gregkh
Cc: eric, stefan.wahren, linux-rpi-kernel, linux-kernel, devicetree,
robh+dt, tiwai, nsaenzjulienne
The audio data is sent to rpi's VideoCore IV trough VCHIQ. We make sure
it's available and that we fail gracefully in case it isn't there.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
drivers/staging/vc04_services/bcm2835-audio/bcm2835.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
index 039565311d10..f4b19a4a974b 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
@@ -294,9 +294,19 @@ static int snd_add_child_devices(struct device *device, u32 numchans)
static int snd_bcm2835_alsa_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
+ struct device_node *fw_node;
u32 numchans;
int err;
+ fw_node = of_find_compatible_node(NULL, NULL, "brcm,bcm2835-vchiq");
+ if (!fw_node) {
+ dev_err(&pdev->dev, "no vchiq firmware node\n");
+ return -ENODEV;
+ }
+
+ if (!vchi_ready(fw_node))
+ return -EPROBE_DEFER;
+
err = of_property_read_u32(dev->of_node, "brcm,pwm-channels",
&numchans);
if (err) {
--
2.19.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* Re: [PATCH 0/9] staging: bcm2835-audio: Cleanups and upgrades
2018-10-16 15:02 [PATCH 0/9] staging: bcm2835-audio: Cleanups and upgrades Nicolas Saenz Julienne
` (8 preceding siblings ...)
2018-10-16 15:02 ` [PATCH 9/9] staging: bcm2835-audio: check for VCHIQ during probe Nicolas Saenz Julienne
@ 2018-10-16 15:47 ` Takashi Iwai
9 siblings, 0 replies; 16+ messages in thread
From: Takashi Iwai @ 2018-10-16 15:47 UTC (permalink / raw)
To: Nicolas Saenz Julienne
Cc: gregkh, eric, stefan.wahren, linux-rpi-kernel, linux-kernel,
devicetree, robh+dt, tiwai
On Tue, 16 Oct 2018 17:02:19 +0200,
Nicolas Saenz Julienne wrote:
>
> Hi,
>
> I just received a RPi3B+ and decided to have a go at fixing stuff in
> the audio driver:
>
> The first half of the patchset are just random fixes found while reading
> the code.
>
> The second half provides devicetree bindings for bcm2835-audio and fixes
> the probe sequence so it fails gracefully if VCHIQ isn't there (as per
> TODO).
>
> The series was developed on top of linux-next and tested on a RPi2B and
> RPi3B+. Sadly I don't have an HDMI monitor with sound so I only tested
> the mini jack output.
All patches look good to me:
Reviewed-by: Takashi Iwai <tiwai@suse.de>
thanks,
Takashi
>
> Thanks,
> Nicolas
>
> ===
>
> Nicolas Saenz Julienne (9):
> staging: bcm2835-audio: unify FOURCC command definitions
> staging: bcm2835-audio: don't initialize memory twice
> staging: bcm2835-audio: reorder variable declarations & remove trivial
> comments
> staging: bcm2835-audio: use anonymous union in struct vc_audio_msg
> staging: bcm2835-audio: more generic probe function name
> ASoC: dt-bindings: bcm2835-rpi: add onboard audio bindings
> ARM: dts: bcm2835-rpi: add onboard audio device
> staging: vchiq_arm: add function to check if probe was successful
> staging: bcm2835-audio: check for VCHIQ during probe
>
> .../bindings/sound/brcm,bcm2835-audio.txt | 15 +++++++
> arch/arm/boot/dts/bcm2835-rpi.dtsi | 5 +++
> .../vc04_services/bcm2835-audio/bcm2835-pcm.c | 10 +----
> .../bcm2835-audio/bcm2835-vchiq.c | 39 ++++++++-----------
> .../vc04_services/bcm2835-audio/bcm2835.c | 30 ++++++++------
> .../bcm2835-audio/vc_vchi_audioserv_defs.h | 6 ++-
> .../vc04_services/interface/vchi/vchi.h | 3 ++
> .../interface/vchiq_arm/vchiq_2835_arm.c | 2 +
> .../interface/vchiq_arm/vchiq_arm.c | 16 ++++++++
> .../interface/vchiq_arm/vchiq_arm.h | 1 +
> .../interface/vchiq_arm/vchiq_if.h | 4 ++
> .../interface/vchiq_arm/vchiq_shim.c | 7 ++++
> 12 files changed, 95 insertions(+), 43 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/sound/brcm,bcm2835-audio.txt
>
> --
> 2.19.1
>
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